This is the name of the Great Eagle who rescued Gandalf from tight situations in the Wars of the Ring, watched over the Company of the Ring, fought in the battle before Mordor's Black Gate and, with Gandalf, brought Sam Gamgee and Frodo Baggins back from Mount Doom. Tolkien described the Great Eagles as "the greatest of all birds; they were proud and strong and noble-hearted". Gwaihir's name means "windlord".